This is my work are the answers correct and if I’m not please correct me. 7.50 This represents basically their money and time

8.Y=90x+50

9.75

10.260 looking at the problem, I simply went back to number nine, saw how long they stayed and how much they spent and divided it and got 6.25. I then saw how much they spent overall on this problem divided 1625 by 6.25 and got 260 nights

11.75

12.600

13.Y=2/3x+600

14 looking at the problem it would take 72 months because every three months the tree grows two inches so 30x 2 +12=72

15.690 in

step-by-step explanation:

6.48/4 4 goes into 6.48 1.62 times

so firstly, we need to isolate the y variables to be able to solve these inequalities. firstly, add 0.5x on both sides of the first inequality and subtract 1.5x on both sides of the second inequality:

now since the slope is positive for the first inequality, this means that the line going upwards belongs to the first inequality, and the line going downwards belongs to the second inequality.

next, since y ≥ in the first inequality, this means that the shaded region will be above the first inequality's line, thus shading regions a and b.

next, since y ≤ in the second inequality, this means that the shaded region is going to be below this line, thus shading regions a and c.

since both lines shade region a, this means that region a is the solution.

step-by-step explanation:

mark brainliest!

b. 1.25 hr

step-by-step explanation:

if you have a constant speed of 60 mph, then you have a ratio between 60 mi. to 1 hr. dividing both sides by 60 we get the ratio

1 mi. to

then mult. both sides by 75 we get the ratio

75 mi. to

simplifying we get

75 mi. to

or 1.25 hr.

a. 12.5 kg

step-by-step explanation:

f = ma

so

m = f/a = (2500 n)/(200 m/s²) = 12.5 kg

1 n = 1 kg·m/s²